Traveling grate



L. W. KLEIN.

TRAVELING GRATE.

APPLICATION FILED DEC. 23. 1918.

1,368,164. Patented Feb. 8, 1921.

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INVENTQR .Lows k4 KLEIN 41 ATTO'RNEY UNITED sTATss PATENT, orrics.

LOUIS W. KLEIN, OF IPO'ITSVILLE, PENNSYLVANIA, ASSIGNOR 130 THE GOXETRAVEL- ING GRATE COMPANY, OF PORT G ARBON, PENNSYLVANIA, A CORIPORATIONOF PENNSYLVANIA.

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Application filed December 23; 1918.

1 0' all to item, it. may concern:

Be'it known that 1, Louis V7. KLEIN, a citizen of the United States ofAmericmresiding at Pottsville, in the county of Schuylkill and State ofPennsylvania, have invented certain new and useful Improvements inTraveling Grates, of which the following is a specification.

My invention relates to traveling grates and particularly to the gratebar; the object of my invention being to provide im proved means forsecuring in position the end key, or top plate of the bank carried bythe grate bar.

In the accompanying drawing- Figure 1 is a broken plan of portion of agrate bar illustrating one embodiment of my invention.

Fig. 2- is a transverse section through the grate bar.

Fig. 3- is an elevation partially in section thereof.

Fig. l is a side elevation of oneof the grate bar keys.

Figs. 5 and 6 respectively, are plan and side elevation of a modifiedgrate bar key,

Fig. 7- is an elevation partially in section of a grate bar illustratingthe embodiment therein of the modified construction shown in Figs. 5 and6.

In traveling grates of the type to which the present invention relates,it is customary to provide transverse grate bars, the opposite ends ofwhich engage the side supporting and traveling chains of the grate.

Between the ends of the bar extends a web on which is carried a bank oftop plates or grate bar keys upon which the fuel bed directly rests. Thekeys are usually held upon this web by means of a dove tailed ribextending the length of the web and upon which the keys are engaged bymeans of dove tailed recesses in their lower edges. In order to threadthe keys upon the dove tail, it it necessary to interrupt the latter atsome point, so that the notches in the lower edges of the keys may bebrought into alinement with the dove tail on the web. The point ofinterruption in the dove tail has ordinarily been located at one or bothends of the web. To complete the key bank at these points the end key orkeys have been carried by a bolt with dove tailed head engagaing thenotch in the key, while the shank of the bolt passes through the webSpecification of Letters. Patent.

Patented Feb. 8, 1921.

Serial No. 267,958.

of the grate bar and is engaged beneath the latter by a nut. This methodof securing the key is unsatisfactory since the nut is diflicult ofaccess when the grate is installed and in operation, and such repairs asmust be made from time to time in the key bank, frequently require astoppage or a slowingup of the grate in order to allow the attendantsuflicient time to remove the nut of the end key bolt, lift the latterfrom the bar, replace the worn outor defective keys of the bank andagain adjust the end key with its bolt afterthe repairs are completed.By my present invention, I have provided an improved fastening means forthe end key by which all operations are performed from the fuelsupporting or outer face of the grate as the latter rounds the endsprocket thus facilitating the removal of the end key and expediting therepairs of the key bank where the latter has become defective.

- In Fig. 1, I have illustrated one end of a grate bar, it beingunderstood of course that a like construction may be employed if desiredon the opposite end, As here shown the bar comprises an end block 10from which extends a depressed web 11 to the end block (not shown) atthe opposite end of the bar. Upon the web is secured a dove tail rib 12upon which the bank of keys is mounted. The lug 13 depending from theend block 10 is engaged in the usual manner by a link of one of the sidecarrying chains (not shown). As will be seen, the rib 12 terminates at apoint spaced from the end block 10 a sufficient distance to permit theinsertion therebetween of one of the keys 14 of the bank so that itsdove tailed notch 15 may be brought into alinement with and slid uponthe rib 12. The end key of the bank, which I have given the specialnumeral 16, is, according to the present invention, supported by a lockblock having a dove tailed head 17 to engage the key 16, an anchor lug18 and a connecting fin 19 uniting the head 17 and anchor lug 18. Toreceive the anchor lug I have here shown the end block 10 recessed at 20from its upper face and slotted at 21 to accommodate the fin 19. Theupper portion of the recess 20 is tapped to receive a screw plug 22,which in inserted position bears at its lower end against the anchor lug18 and thus holds the block in position.

The manner in which this end key block is used is readily understood.The bank of keys 14. having been completed on the rib 12, the end key 16is inserted upon the head 17 of the lock block while the latter isdetached from the grate bar. The anchor lug 18 is then dropped down inthe well 20, the fin 19 extendingthrough the slot 21. The size of theblock is such that in inserted position its dove tail head 17, restsupon the web 11 in alinement with the dove tail 12 of the grate bar andholds the end key 16 in register with the keys 1 1 of the bank. The plug22 is then inserted and screwed down flush or below the surface of theend block, thus holding the end key and its lock block rigidly inposition. If it be desired to remove the latter, it is only necessary tounscrew the plug 22 and lift the end key with its associated carrierfrom the grate bar, thus again opening the space through which the keys14 of the bank may be removed from the dove tail 12.

In the modification illustrated in Figs. 5,

6 and 7, I have dispensed with the lock block as anindependent elementand have formed an anchor block 23 integral with the end key 24 to whichit is connected by a fin 25. In this modified construction, the endblock of the bar is recessed in precisely the same way as firstdescribed and the same 1 screw plug 22 is utilized.

Various other modifications will readily occur to those skilled in theart, which do not depart from what I claim as my invention. Theunderlying thought of the present invention is to provide some .meanswhlch are accessible from the outer or fuel supporting face of the grateby whlch the end key may be detachably secured in position thuseliminating the necessity for the attendant working through the spokesof the end sprocket when he desires to repair the key bank on the gratebar. As will be readily recognized, all operations which must beperformed to release the keys, are accomplished from the fuel supportingface of the grate.

1. In a traveling grate, a grate bar having an end block, akey-supporting rib spaced therefrom, a bank of keys engaging said rib tosecure the keys on the bar, a key arranged in the interspace betweensaid end block and rib, and means detachably engaging said end block tosecure said interspace key to the bar, said securing means beingaccessible from the fuel supporting surface of the tached.

2. In a traveling grate, a grate bar havgrate for being attached anddeing an end block and an adjacent depressed key supporting web, saidend block being recessed to form a well and a slot opening from saidwell to the space above the web, a grate bar key having amember'associated therewith and entering said well together with meansoperative from'the fuel supporting facfi of the grate to hold saidmember in the we 3. In a traveling grate, a grate bar having an endblock and an adjacent depressed key supporting web, said end block beingrecessed to form a well, and a slot opening from said well to the spaceabove the web, a grate bar key having a member associated therewithentering said well together with a screw plug entering said well fromthe fuel supporting face of the grate to hold said member in the well.

In testimony whereof I have signed my name to this specification.

' LOUIS W. KLEIN.

